cclenter
np = op2(CCL, NIL, (Node *)cclenter((char *)rlxstr));
np = op2(NCCL, NIL, (Node *)cclenter((char *)rlxstr));
| CCL { $$ = op2(CCL, (NODE *) 0, cclenter($1)); }
| NCCL { $$ = op2(NCCL, (NODE *) 0, cclenter($1)); }